sqlite EF DbUpdateException

我正在尝试使用下面定义的简单控制台应用程序来学习SQLite和实体框架。当我在VS中运行此代码时，执行context.SaveChanges（）时出现如下所示的异常。我需要解决此问题的帮助。

using System;
using System.Data.SQLite;
using System.IO;
using System.Linq;
using System.Reflection;

namespace EntityFrameworkConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            var sb = new System.Data.SQLite.SQLiteConnectionStringBuilder();
            sb.DataSource = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "test.db");
            sb.ForeignKeys = true;
            sb.BinaryGUID = true;
            sb.DateTimeFormat = SQLiteDateFormats.ISO8601;
            sb.DateTimeKind = DateTimeKind.Local;
            sb.ToFullPath = true;

            using (var context = new BloggingContext(new SQLiteConnection(sb.ConnectionString)))
            {

                context.Blogs.Add(new Blog { Name = "Yet Another Blog #1" });

                context.SaveChanges();

                var blogs = (from b in context.Blogs
                             orderby b.Name
                             select b).ToList();

            }
        }

    }
}

using System.Data.Common;
using System.Data.Entity;

namespace EntityFrameworkConsoleApplication1
{
    [DbConfigurationType(typeof(MyConfiguration))]
    public class BloggingContext : DbContext
    {
        public BloggingContext(DbConnection c):base(c,true)
        {
        }

        public DbSet<Blog> Blogs { get; set; }
    }
}

namespace EntityFrameworkConsoleApplication1
{
    public class Blog
    {
        public int BlogId { get; set; }
        public string Name { get; set; }
    }
}

using System;
using System.Data.Entity;
using System.Data.Entity.Core.Common;
using System.Data.SQLite;
using System.Data.SQLite.Linq;
using System.Reflection;

namespace EntityFrameworkConsoleApplication1
{
    public class MyConfiguration : DbConfiguration
    {
        public MyConfiguration()
        {
            SetProviderFactory("System.Data.SQLite", SQLiteFactory.Instance);
            SetProviderFactory("System.Data.SQLite.EF6", SQLiteProviderFactory.Instance);
            Type t = Type.GetType(
                       "System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6");
            FieldInfo fi = t.GetField("Instance", BindingFlags.NonPublic | BindingFlags.Static);
            SetProviderServices("System.Data.SQLite", (DbProviderServices)fi.GetValue(null));
        }
    }
}

未处理System.Data.Entity.Infrastructure.DbUpdateException
_HResult = -2146233087 _message =更新条目时发生错误。有关详细信息，请参见内部异常。HResult = -2146233087
IsTransient = false消息=更新条目时发生错误。有关详细信息，请参见内部异常。Source = EntityFramework StackTrace：在System.Data.Entity.Internal.InternalContext.SaveChanges（）在System.Data.Entity.Internal.LazyInternalContext.SaveChanges（）在System.Data.Entity.DbContext.SaveChanges（）在EntityFrameworkConsoleApplication1.Program。 c：\ Users \ John \ Documents \ Visual Studio 2013 \ Projects \ EntityFrameworkConsoleApplication1 \ EntityFrameworkConsoleApplication1 \ Program.cs：System.AppDomain._nExecuteAssembly中第33行的Main（String [] args）。 .AppDomain.ExecuteAssembly（String assemblyFile，Evidence assemblySecurity，String [] args）在Microsoft。VisualStudio.HostingProcess.HostProc.RunUsersAssembly（）在System.Threading.ThreadHelper.ThreadStart_Context（对象状态）。在System.Threading.ExecutionContext.Run（ExecutionContext.Run（ExecutionContextexecutionContext，ContextCallback回调，对象状态，布尔保持同步Ctx）在System.Threading.ExecutionContext.RunInternal（ExecutionContext执行上下文，ContextCallback回调，对象状态，布尔keepSyncCtx） ，ContextCallback回调，对象状态），位于System.Threading.ThreadHelper.ThreadStart（）内部异常：System.Data.Entity.Core.UpdateException _HResult = -2146233087 _message =更新条目时发生错误。有关详细信息，请参见内部异常。HResult = -2146233087 IsTransient = false消息=更新条目时发生错误。有关详细信息，请参见内部异常。Source = EntityFramework StackTrace：位于System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator。2 updateFunction, Boolean throwOnClosedConnection) at System.Data.Entity.Core.EntityClient.Internal.EntityAdapter.Update(Boolean throwOnClosedConnection) at System.Data.Entity.Core.Objects.ObjectContext.<SaveChangesToStore>b__33() at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func1个函式，位于System.Data.Entity.Core.Objects.ObjectContext.SaveChangesToStore（SaveOptions选项，IDbExecutionStrategy执行策略）位于System.Data.Entity.Core.Objects.ObjectContext。<> c__DisplayClass28。 System.Data.Entity.Infrastructure.DefaultExecutionStrategy.Execute的b__25（）（Func 1 operation) at System.Data.Entity.Core.Objects.ObjectContext.SaveChanges(SaveOptions options) at System.Data.Entity.Internal.InternalContext.SaveChanges() InnerException: System.Data.SQLite.SQLiteException _HResult=-2147467259 _message=SQL logic error or missing database no such table: Blogs HResult=-2147467259 IsTransient=false Message=SQL logic error or missing database no such table: Blogs Source=System.Data.SQLite ErrorCode=1 StackTrace: at System.Data.SQLite.SQLite3.Prepare(SQLiteConnection cnn, String strSql, SQLiteStatement previous, UInt32 timeoutMS, String& strRemain) at System.Data.SQLite.SQLiteCommand.BuildNextCommand() at System.Data.SQLite.SQLiteCommand.GetStatement(Int32 index) at System.Data.SQLite.SQLiteDataReader.NextResult() at System.Data.SQLite.SQLiteDataReader..ctor(SQLiteCommand cmd, CommandBehavior behave) at System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior) at System.Data.SQLite.SQLiteCommand.ExecuteDbDataReader(CommandBehavior behavior) at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<>c__DisplayClassb.<Reader>b__8() at System.Data.Entity.Infrastructure.Interception.InternalDispatcher1.Dispatch [TInterceptionContext，TResult]（1 operation, TInterceptionContext interceptionContext, Action执行的Func 1 1 executed) at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext) at System.Data.Entity.Internal.InterceptableDbCommand.ExecuteDbDataReader(CommandBehavior behavior) at System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Entity.Core.Mapping.Update.Internal.DynamicUpdateCommand.Execute(Dictionary，Action.2标识符值，List`1生成值）在System.Data.Entity.Core处.Mapping.Update.Internal.UpdateTranslator.Update（）InnerException：